Roofing material



March 15, 1932. c. sc-E 1,849,869

ROOFING MATERIAL Original Filed June 30 1920 Patented Mar. 15, 1932 UNITED STATES PATENT OFFICE ALBERT C. FISCHER, 01' CHICAGO, ILLINOIS, ASSIGNOR TO THE PHILIP CAREY MANIT- FACTURIN G COMPANY, A OORPORATION OF OHIO ROOFING MATERIAL Application filed June 30, 1920, Serial No. 393,016. Renewed July 5, 1927.

This invention relates to sheet roofing materials or surfacing materials, and has special reference to the means provided upon or for use in connection with such materials,

5 through which to adapt certain areas of the material for seaming or jointing with or adhering to the building structure or other portions of the material with which it may be associated in use.

Accordingly, the invention consists primarily in providing a mastic joining strip of sheet roofing or surfacing material, adapted for application to such roofing or surfacing material, and this strip consists of a suitable vehicle, such, for instance, as felt, fabric, or

other fibrous vehicle permeated by a mastic naterial which adapts the strip to serve as a lementing element, packing element, or the li e. zo In order that the invention may be fully understood, several embodiments thereof are disclosed by way of illustrat-ion in the acconpanying drawings. i

In said drawin Figures 1, 2, 3, 4, and 5 are perspective views of the joining strip and the method of associating it' with the roofing sheet, whereby its adhesive surface may be-protected from contact with extraneous surfaces until the 80 material is put into use.

'Figures 6, 7 and 8 are further modifications of a method of applying a joining strip and protecting its adhesive surface from premature contact.

As suggested in Figures 1 to 5, inclusive, strips may be applied to the sheet 1 in various manners with the eifect of protecting their adhesive surfaces until it is desired to use the sheet, when the strip may be turned up to expose its adhesive surface for contact with' additional element of a gripping margn 20 through which to draw the strip away from the sheet when the sheet is to be put into use.

In Figures 6 and 7 the folded strip 26 is countersunk in the sheet 1, and the countersink is of such lateral dimension as will acconnnodate the strip when unfolded and present for adhesion to an adjoining piece of roofing material a mastic surface equal to the combined width of the strip when unfolded.

In Figure 8, a strip 2d of lap cement is covered with a strip 26 of fabric in a manner to be exposed by the folding back of the fabric, which also has the effect of presenting an adhesive face of the fabric to an overlapping piece of roofing material.

There is an especial advantage with all of the forms shown in Figures 1 to 8, inclusive,

in that the mastic material is pocketed or enveloped in a manner to not only avoid contact of the adhesive surfaces in the roll, but to prevent flowing of the mastic when the roll is stood on end.

The various forms of joining strips herein described may be m'arketed in proper form for application to the roofing sheet, as, for instance, by rolling the strip and ship ing it in suitable wrappers, but it is preferaly applied to the sheet in the factory.

The mastic with which the seaming or joining strip is impregnated may be of varying `character according to the method of using it. The asphalt may be asphaltic, bitumnous or any other desired material. It may have the inherent quality of lasting stickiness or adhesiveness so that when exposed it renders the roofing material immediately self adhering; or it may be compounded more with a View to afl'ording a t packing substance between overlapped sheets of material so as to render weather-proof a joint that is primarily held by nailing; or it may contain a non-drying oil which will be given oil' gradually into the impregnating substance of an overlying sheet with the efl'ect of dissolving such substance and developing a gradual cementing action at the joint; or it may be of such nature that it will be normally non-adhesive, but may be readily rendered adhesive by painting over its exposed surface a suitable reagent that Will sufliciently dissolve it to cause it to adhere to Contacting surfaces. This latter method may likewise be applied to a roll of the seaming tape or strip just previous to putting it into use.

Mastics having the inherent quality of adhesiveness when in normal state and suitable for rendering roofing or other sheet surfacing material self-adhering without the use of heat or other media at the time of applying the surfacing material to its place of use,

are readily obtainable from dealers in the open market when specified in terms of function to be performed. Such mastics are disclosed in my co-pending application Serial No. '336,713, filed November 8, 1919. It is to be understood that the present invention is not linited to any particular formula for the production of a mastic having the inherent quality of remaining adhesive until after the coveringmaterial is applied at its place of use, and where it encounters exposure resulting from removal of the original package in which it is sold.

I claim:

1. The herein described sheet roofing or surfacing material having located upon seaming, jointing, or adhering areas thereof a mastic jointing strip having the inherent quality of adhesiveness in its normal state; said strip having its jointin surface presented normally inward, and eing movable relatively to the sheet to present its said surface outwardly for contact.

2. Sheet roofing or the like carrying upon seaming or jointing areas thereof a normally adhes ive mastic substance, and a member normally enclosing said nastic but adapted, to unfold to expose the same.

3. A roofing sheet or the like having thereon a normally adhesive mastic seaming member folded upon itself, and having upon its faces which are opposed in folding a mastic substance which is exposed for contact by the unfolding of the strip.

4. A roofing sheet or the like having thereon a mastic seaming member folded upon itself, and having upon its faces which are opposed in folding a normally adhesive mastic substance which is exposed for contact by the unfolding of the strip; said strip beingcountersunk in the sheet, and the countersink being of a width that accommodates the strip when unfolded.

Signed at Chicago, Illinois, this 25th day of June, 1920. ALBERT C. FISCHER. 

